Box-making machine



1937- A. L. ROSENMUND 2,091,377

BOX MAKING MACHINE Filed Feb. 4, 1956 5 Sheets-Sheet 1 INVENTOR.ALFREDLROS'LNMUND 70 /%ORNW 1937. A. L. ROSENMUND- 2,091,377

BOX MAKING MACHINE Filed Feb. 4, 1936 5 Sheets-She et 2 ALFgEDA.RQSENMUND A T T ORNEYS.

Aug. 31, 1937. A. L. ROSENMUND BOX MAKING MACHINE 5 Sheets-Sheet 3 FiledFeb. 4, i936 D T. m m x mwlm m m xm 0 3R 5 2 2 a 0% E a? @5 oo 6 A 5 mAug. 31, 1937.

A. L. ROSENMUND BOX MAKING MACHINE 5 Sheets-Sheet 4 Filed Feb. 4, 1936INVENTOR. ALFRED LROSLNMUND Aug. 31, 1937. A. L. ROSENMUND BOX MAKINGMACHINE Filed Feb. 4, 1936 5 Sheets-Sheet 5 INVENTOR. ALFRED L.ROSENMUNDA TTORNEYS.

Patented Aug. 31, 1937 UNETE S'llti;

FFEQE BOX-MAKEN G MACHINE Delaware Application February 4, 1936, SerialNo. 62,272

16 Claims.

This invention relates to machines for equipping wired box parts withinterengageable fasteners and particularly to machines for manipulatinga wire secured to a box part to provide the wire end with a bight and toperpetuate the bight by driving the end of the wire into the box part.

It is an object of the invention to provide certain improvements inmachines of the type shown and described in U. S. Patents No. 1,933,031of October 31, 1933, and No. 2,024,188 of December 17, 1935. I

It is a further object to provide a machine of the character describedwith improved means for clinching the ends of wires which are driventhrough the box parts.

One illustrative embodiment of the invention is shown in theaccompanying drawings, in which:-

0 Figure 1 is a side elevation of a machine embodying the invention.

Fig. 2 is a rear elevation of the same.

Fig. 3 is a diagrammatic view of the wiremanipulating elements of themachine shown in 25 stopped position with a pair of wire-connected boxparts positioned on the supporting table. The dotted lines indicate thetable in raised position and the full lines indicate the table inlowered position,

30 Fig. 4 is a similar view at a different stage in the cycle ofoperation and showing the position of the different wire-manipulatingelements at the time of a prong-forming operation which occurs justafter the wire-cutting operation.

35 Fig. 5 is a similar view showing the position of thewire-manipulating elements after the wire connecting the two box partshas been severed and prongs formed on the ends of the severed wires andafter the prongs have been swung over 40 onto their respective box partsto form bights.

Fig. 6 is a similar view showing the position of the box parts after theprongs have been driven through the box parts and clinched to perpetuatethe bights.

5 Fig. '7 is an enlarged perspective view of one of the clinching units.In this view the prong on the end of the wire is being driven throughthe box part and has not yet contacted the clincher block.

50 Fig. 8 is a similar View but showing the position of the parts uponcompletion of a clinching operation.

Fig. 9 is a perspective view of a wirebound box blank equipped withinterengageable fasteners 55 by the machine of this application,

(Cl. Mil-93) Fig. 10 is a perspective View of a completed box equippedwith interengageable fasteners by the machine of this application andshowing one of the fasteners in an intermediate stage of interengagementand the other fasteners completely 5 interengaged.

One illustrative product of the machine of this application is shown inFigs. 9 and 10. Fig. 9 discloses a wirebound box blank consisting of aplurality of sections of cleats A and side sheets B 10 connectedtogether by binding wires C stapled to the several sections. Suchwirebound box blanks are made on a box blank machine which staples thewires to the several sections. As successive box blanks emerge from thebox blank 5 machine they are connected by the binding wires C,appropriate spaces being left between successive box blanks to permitsevering the Wires and manipulating the severed ends to provide bights D(see Fig. 9) which bights may be interengaged to close the box, as shownin Fig. 10.

As the wire-connected box blanks emerge from the box blank machine theyare fed into the machine of this application and positioned on avertically movable support or table T, as shown diagrammatically in Fig.3. As there shown, in dotted lines, the wire to be operated upon islocated directly above cutters i, prong-forming blocks 2, andbight-forming spindles 3, and below cutter-actuator 5 carryingprong-forming elements 5, and also below drivers 6.

In Fig. 3, the parts are at rest preparatory to the start of themachine. The machine is operated through a one-cycle clutch as explainedin said Patents No. 1,933,031 and No. 2,024,188, and during one cycle ofoperation the several wire-manipulating elements go through thesuccessive operations shown diagrammatically in Figs. 3 to 6.

As shown in Fig. 3 in the full lines, the table support first lowers thewire C between cutters I and into contact with prong-forming blocks 2.As shown in Fig. 4:, the cutter-actuator carrying prong-forming elements5 descends, operating the I cutters l to sever the wire C and bend thesevered ends over prong-forming blocks 2 to form prongs P on the ends ofthe wire. After descent of the cutter-actuator, the spindles 3 areraised so that the wire will be lifted clear of the prong-formingblocks. The spindles are then partially rotated to swing the prongs overonto the box parts, as shown in Fig. 5. Drivers 6 thereupon descend anddrive the prongs through the box parts to perpetuate the bights, asshown in Fig. 6.

I The several wire-manipulating elements and the mechanisms foroperating the same are disclosed and described in detail in said PatentsNo. 1,933,031 and No. 2,024,188, reference to which is hereby made for adetailed description. The present invention is. directed to animprovement in the mechanism for clinching the prongs P which are driventhrough the box parts. In the machines of the prior patents referred to,the box part during a driving operation rests upon a plate yieldinglyheld by means of springs a sufficient distance above the clincher blockto permit the prong to be driven through the box part before contactingwith the clincher block, an opening being provided in the plate abovethe clincher block. The springs are of such stiffness as to resist thethrust of the driver while the prong is being driven through the boxpart and then to yield to the thrust of the driver to permit it to forcethe prong down against the clincher 2O block to cause a clinchingoperation.

. While such an arrangement operated satisfactorily under certainconditions, it has been found diflicult to regulate the stiffness of thesprings to accommodate different types of wood employed in themanufacture of boxes. Springs having suflicient stifiness to resist thethrust of the driver when driving a prong through soft wood sometimesfail to resist the thrust of the driver when driving prongs throughharder woods, with the result that the prongs are crushed or flattenedon top of the box part instead of being driven therethrough.

The present invention is intended to eliminate the difiiculties referredto above and to provide positive means for resisting the thrust of thedriver until the prong has been driven through the box part, and toprovide means for automatically withdrawing the positive resistor afterthe prong has been driven through the box part to permit the driver todrive the prong downwardly against the clincher block, thus providingclincher mechanism adapted without adjustment to operate satisfactorilyon woods varying widely in hardness.

Referring particularly to Figs. '7 and 8, the box part designated Xrests during a driving operation on a plate or plates I0, there beingone plate I0 for each wire secured to the box part X. Plate I0 issupported above blocks II and in spaced relation thereto by means ofsprings I2 and bolts I3 slidable in recesses formed in block II. BlockII is secured to one of the machine castings, as described in theafore-mentioned patents.

Plate I0 is provided with an opening I4 passing therethrough and intowhich the prong P may be driven by the driver. Directly beneath theopening I4 and secured to the upper surface of the block II is aclincher block I5. As shown in Fig. 7, the clinching surface ofv theblock I5 is located a sufficient distance below the top surface of theplate I 0 to permit the prong to be fully driven before it contacts withthe block I5.

To positively hold the plate ID in raised position during the driving ofthe prong, plate I0 is provided with a downwardly extending lug I6 whichnormally rests upon a cam fixed to a shaft I3 journaled in bearings in ablock I9 secured to block I I.

As shown in Fig, '7, cam I! is normally held in contact with lug I6positively to keep plate II) in raised position through the action of aspring 20, one'end of which is secured to a bracket 2I carried by blockII, and the other end of which is secured to a pin 22 fixed to shaft I8.Cam I! carries a pin 23 to limit the action of spring 20 and to positionthe cam I'I relative to the lug I6.

Thus it will be seen that when the cam I1 is in the position shown inFig. '7, plate I0 will be held positively in raised position during thedriving of the prong P through the box part X. Drivers 6 which drive theprongs through the box part are carried by a vertically reciprocatingcross bar 24, as shown in Fig. 2. To move cam I! out of contact with lugI5 at the proper time to permit the driver to force the prong P downagainst clincher block I5, there is secured to cross bar 24 a casting 25carrying a downwardly extending release bar 26 which is so adjusted asto contact a lever 21 fixed to shaft It just as the driver contacts theprong and then starts to drive the prong through the box blank.Continued downward movement of the cross bar 24 causes lever 2'! throughthe action of release bar 26 to rock shaft I8 and thereby move cam I!out from under lug I6 as the driver contacts the box part. Continuedmovement of the driver will then force the box part X, prong P and plateI0 downwardly toward the block II and the clincher block I5, and theprong P will be clinched as shown in Fig. 8.

Shaft I 8 extends through all the clincher units and it is necessary tohave but one release bar 26 to actuate it, as shown in Fig. 2. 7

When the driving and clinching operations are completed and the crossbar '24 raised to initial position, springs I2 will raise plate I0 toinitial position and spring 20 will move cam I'I into position beneaththe lug I6 to resist positively the next thrust of the driver.

Among other advantages the clinching mechanism of this applicationinsures a satisfactory and uniform clinching operation regardless ofwide variations in the type of character of wood used in the manufactureof boxes. 7

While one clincher unit only has been shown and described in detail, itwill be understood that a clincher unit is provided for each wire to beoperated upon, the several clinching units being adjustable toaccommodate different wire spacings, all as described in the patentshereinbefore referred to.

While the clinching mechanism of this application has been described asadapted for use in the particular type of machine shown in the aforesaidPatents No. 1,933,031and No. 2,024,188, it will be understood that itmay be used to advantage in other machines designed to clinch the endsof wires driven through box parts.

It will also be understood that the invention is not to be limited tothe specific embodiment shown for purposes of illustration as it may bevariously embodied without departing from the invention.

It will also be understood that all of the features of the inventionneed not be used conjointly as they may be used to advantage in variouscombinations as defined in the sub-joined claims.

I claim:

1. In a machine of the character described, instrumentalities operableupon a wire secured to a box part to bend the wire to form a bight,means to drive the end of the wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said clinch means comprising a clinch block, meansyieldingly to support the box part above the clinch block, meanspositively to support the box part above the clinch block, and

means to release the positive support after the wire has been driventhrough the box part to permit the driver to force the wire end againstthe clinch block.

2. In a machine of the character described, instrumentalities operableupon a wire secured to a box part to bend the wire to form a bight,means to drive the end of the Wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said clinch means comprising a clinch block, meansyieldingly to support the box part in spaced relationship to the clinchblock, means positively to support the box part in spaced relationshipto the clinch block, and means torelease the positive support after thewire end has been driven through the box part to permit the driver toforce the wire end against the clinch block.

3. In a machine of the character described, instrumentalities operableupon a. wire secured to a box part to bend the wire to form a bight,means to drive the end of the wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said clinch means comprising a clinch block,yielding means normally supporting the box part above the clinch block,means positively tosupport the box part above the clinch block, andmeans to release the positive support after the wire end has been driventhrough the box part to permit the driver to force the wire end againstthe clinch block.

4. In a machine of the character described, instrumentalities operableupon a wire secured to a box part to bend the wire to form a bight,means to drive the end of the wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said clinch means comprising a clinch block,yielding means normally holding the box part in spaced relationship tothe clinch block,

means positively to hold the box part in spaced relationship with theclinch block, and means to withdraw the positive support during adriving operation.

5. In a machine of the character described, instrumentalities operableupon a wire secured to a box part to bend the wire to form a bight,means to drive the end of the wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said clinch means comprising a clinch block,yielding means normally holding the box part in spaced relationship tothe clinch block, means positively to hold the box part in spacedrelationship with the clinch block and means to withdraw the positivesupport during a selected phase of the driving operation.

6. In a machine of the character described, instrumentalities operableupon a wire secured to a box part to bend the wire to form a bight,means to drive the end of the wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said clinch means comprising a clinch block,yielding means normally holding the box part in spaced relationship tothe clinch block, means positively to hold the box part in spacedrelationship with the clinch block, and means operated in accordancewith the position of the driver to withdraw the positive support.

7. In a machine of the character described, instrumentalities operableupon a wire secured to a box part to bend the wire to form a bight,means to drive the end of the wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said clinch means comprising a clinch block, aspring support for the box part means positively to support the box partabove the clinch block, and means to release the positive support duringa driving operation.

8. In a machine of the character described, instrumentalities operableupon a wire secured to a box part to bend the wire to form a bight,means to drive the end of the Wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said clinch means comprising a clinch block, aspring support for the box part, means positively to support the boxpart above the clinch block, and means operated in accordance with theposition of the driver to withdraw the positive support.

9. In a-machine of the character described, instrumentalities operableupon a Wire secured to a box part to bend the wire to form a bight,means to drive the end of. the Wire through the box part to perpetuatethe bight, and means to clinch the end of the Wire which is driventhrough the box part; said clinch means comprising a clinch block, aspring support for the box part, means positively to support the boxpart in spaced relationship to the clinch block, and means to releasethe positive support at selected times.

10. In a machine of the character described, instrumentalities operableupon a wire secured to a box part to bend the wire to form a bight,means to drive the end of the wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said clinch means comprising a clinch block, aspring support for the box part, means positively to support the boxpart in spaced relationship to the clinch block, means normally holdingsaid support in operative position, and means to move it to inoperativeposition.

11. In a machine of the character described,

instrumentalities operable upon a flexible binder secured to a box partto bend the binder to form a bight, means to drive the end of the binderthrough the box part to perpetuate the bight, and means to clinch theend of the binder which is driven through the box part; said clinchmeans comprising a clinch block, means yieldingly to support the boxpart above the clinch block, means positively to support the box partabove the clinch block, and means to release the positive support atselected times.

12. In a machine of the character described, instrumentalities operableupon a flexible binder secured to a box part to bend the binder to forma bight, means to drive the end of the binder through the box part toperpetuate the bight, and means to clinch the end of the binder which isdriven through the box part; said clinch means comprising a clinchblock, a spring support for the box part, means positively to supportthe box part in spaced relation to the clinch block, and means torelease the positive support at selected times.

13. In a machine of the character described, instrumentalities operableupon a plurality of. wires secured to a box part to bend each wire toform a bight, means to drive the end of each wire through the box part,and means to clinch the ends of the wires which are driven through thebox part; said clinch means comprising a plurality of clinch blocks,means yieldingly to support the box part above the clinch blocks, meanspositively to support the box part above the clinch blocks, and means torelease the positive support at selected times.

14. In a machine of the character described, instrumentalities operableupon a plurality'of wires secured to a box part to bend each wire toform a bight, means to drive the end of each wire through the box part,and means to clinch the ends of the wires which are driven through thebox part; said clinch means comprising a plurality of clinch blocks, aspring support for the box part, means positively to support the boxpart in spaced relation to the clinch blocks, and means to release thepositive support at selected times.

15. In a machine of the character described, instrumentalities operableupon a wire secured to a box part to bend the wire to form a bight,means to drive the end of the wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said means comprising a stationary fclinch block,yielding means normally holding the box part in spaced relationship tothe clinch block, means positively to hold the box part in spacedrelationship with the clinch block, and means to withdraw the positivesupport during a driving operation.

16. In a machine of the character described, instrumentalities operableupon a wire secured to a box part to bend the wire to form a bight,means to drive the end of the wire through the box part to perpetuatethe bight, and means to clinch the end of the wire which is driventhrough the box part; said clinch means comprising a stationary clinchblock, means positively to support the box part above the clinch block,and means to release the positive support during a driving operation.

ALFRED L. ROSENMUND.

